Freshwater Aquarium Heaters & Thermometers

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Tetrafauna Aquatic Reptile Aquarium Heater, 100-watt slide 1 of 4
Tetrafauna Aquatic Reptile Aquarium Heater, 100-watt slide 2 of 4
Tetrafauna Aquatic Reptile Aquarium Heater, 100-watt slide 3 of 4
Tetrafauna Aquatic Reptile Aquarium Heater, 100-watt slide 4 of 4
Tetrafauna Aquatic Reptile Aquarium Heater, 100-watt slide 1 of 4
Tetrafauna Aquatic Reptile Aquarium Heater, 100-watt slide 2 of 4
Tetrafauna Aquatic Reptile Aquarium Heater, 100-watt slide 3 of 4
Tetrafauna Aquatic Reptile Aquarium Heater, 100-watt slide 4 of 4
Tetrafauna Aquatic Reptile Aquarium Heater, 100-watt slide 1 of 4
Tetrafauna Aquatic Reptile Aquarium Heater, 100-watt slide 2 of 4
Tetrafauna Aquatic Reptile Aquarium Heater, 100-watt slide 3 of 4
Tetrafauna Aquatic Reptile Aquarium Heater, 100-watt slide 4 of 4

Tetrafauna Aquatic Reptile Aquarium Heater, 100-watt

Rated 3.8 out of 5 stars
88
$29.47 Chewy Price
$34.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Underwater Treasures Easy Read Fish Thermometer

Rated 2.9 out of 5 stars
14
$10.69 Chewy Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

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Fluval M 200Watt Submersible Fish Heater slide 1 of 8
Fluval M 200Watt Submersible Fish Heater slide 2 of 8
Fluval M 200Watt Submersible Fish Heater slide 3 of 8
Fluval M 200Watt Submersible Fish Heater slide 4 of 8
Fluval M 200Watt Submersible Fish Heater slide 5 of 8
Fluval M 200Watt Submersible Fish Heater slide 6 of 8
Fluval M 200Watt Submersible Fish Heater slide 7 of 8
Fluval M 200Watt Submersible Fish Heater slide 8 of 8
Fluval M 200Watt Submersible Fish Heater slide 1 of 8
Fluval M 200Watt Submersible Fish Heater slide 2 of 8
Fluval M 200Watt Submersible Fish Heater slide 3 of 8
Fluval M 200Watt Submersible Fish Heater slide 4 of 8
Fluval M 200Watt Submersible Fish Heater slide 5 of 8
Fluval M 200Watt Submersible Fish Heater slide 6 of 8
Fluval M 200Watt Submersible Fish Heater slide 7 of 8
Fluval M 200Watt Submersible Fish Heater slide 8 of 8
Fluval M 200Watt Submersible Fish Heater slide 1 of 8
Fluval M 200Watt Submersible Fish Heater slide 2 of 8
Fluval M 200Watt Submersible Fish Heater slide 3 of 8
Fluval M 200Watt Submersible Fish Heater slide 4 of 8
Fluval M 200Watt Submersible Fish Heater slide 5 of 8
Fluval M 200Watt Submersible Fish Heater slide 6 of 8
Fluval M 200Watt Submersible Fish Heater slide 7 of 8
Fluval M 200Watt Submersible Fish Heater slide 8 of 8

Fluval M 200Watt Submersible Fish Heater

Rated 4.3 out of 5 stars
26
$36.99 Chewy Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

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Marina Betta Submersible Aquarium Heater slide 1 of 4
Marina Betta Submersible Aquarium Heater slide 2 of 4
Marina Betta Submersible Aquarium Heater slide 3 of 4
Marina Betta Submersible Aquarium Heater slide 4 of 4
Marina Betta Submersible Aquarium Heater slide 1 of 4
Marina Betta Submersible Aquarium Heater slide 2 of 4
Marina Betta Submersible Aquarium Heater slide 3 of 4
Marina Betta Submersible Aquarium Heater slide 4 of 4
Marina Betta Submersible Aquarium Heater slide 1 of 4
Marina Betta Submersible Aquarium Heater slide 2 of 4
Marina Betta Submersible Aquarium Heater slide 3 of 4
Marina Betta Submersible Aquarium Heater slide 4 of 4

Marina Betta Submersible Aquarium Heater

Rated 4 out of 5 stars
72
$9.68 Chewy Price
$17.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

GloFish Submersible Fish Heater, 50-watts

Rated 4.1 out of 5 stars
23
$17.47 Chewy Price
$22.49 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Lifegard Pre-Set Quartz Glass Heater Electronic Control, 25 watt

Rated 4.3 out of 5 stars
12
$13.59 Chewy Price
$20.51 List Price
Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Jun 3 and Jun 7

OASE Indoor Aquatics HeatUp 50 Adjustable Fish Heater

Rated 4.2 out of 5 stars
5
$34.82 Chewy Price
$37.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt

Rated 4 out of 5 stars
42
$27.97 Chewy Price
$34.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

New

JBJ Aquarium Nano Arctica E-Chiller, White/Black, 10-gal

$300.00 Chewy Price
($30.00/gl) Price per Unit
Autoship Price

Free delivery on first-time orders
Free 365-day returns
Arrives between Jun 2 and Jun 6

Lifegard Led Digital Thermometer, Blue

Rated 4.4 out of 5 stars
5
$34.49 Chewy Price
Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Jun 3 and Jun 7

Fluval P10 Pre-Set Aquarium Fish Heater

Rated 4.2 out of 5 stars
22
$19.00 Chewy Price
$26.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Zoo Med Digital Aquarium Thermometer

Rated 3.4 out of 5 stars
18
$8.99 Chewy Price
$10.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Hydor Theo Shatterproof Aquarium Heater, 25-watt

Rated 3.5 out of 5 stars
44
$26.88 Chewy Price
$35.95 List Price
Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between May 31 and Jun 4

OASE Indoor Aquatics Filtosmart Thermo 200 External Fish Heater

Rated 3 out of 5 stars
2
$163.89 Chewy Price
$219.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Zoo Med BettaTherm Mini Size Betta Bowl Heater

Rated 2.3 out of 5 stars
11
$15.70 Chewy Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

JBJ Aquarium Arctica Titanium Auqarium Chiller, 1/4-hp

Rated 5 out of 5 stars
3
$965.22 Chewy Price
Autoship Price

Free delivery on first-time orders
Free 365-day returns
Arrives between Jun 2 and Jun 6

Penn-Plax Aquarium LED Display Heater, 300W

Rated 2.4 out of 5 stars
5
$32.99 Chewy Price
$64.99 List Price
Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between May 31 and Jun 3

Fluval Sea Aquarium Hydrometer, Medium

Rated 2.5 out of 5 stars
6
$14.54 Chewy Price
$14.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Seapora Quartz Aquarium Heater, 100-watt

Rated 4 out of 5 stars
7
$21.99 Chewy Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

OASE Indoor Aquatics Biostyle Thermo 30 Fish Heater, White

Rated 1 out of 5 stars
1
$70.99 Chewy Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Hydor Micro & Mini Aquarium Slim Heater, 15-watt

Rated 3.8 out of 5 stars
36
$15.29 Chewy Price
$16.95 List Price
Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between May 31 and Jun 4

OASE Indoor Aquatics Biostyle Thermo 30 Fish Heater, Dark Blue

Rated 1 out of 5 stars
1
$88.99 Chewy Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

OASE Indoor Aquatics Biostyle Thermo 50 Fish Heater, Dark Blue

Rated 5 out of 5 stars
1
$79.52 Chewy Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Penn-Plax 10W Plastic Safe Aqiuarium Heater, 4-in

Rated 3.2 out of 5 stars
6
$25.99 Chewy Price
$27.99 List Price
Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between May 31 and Jun 3

Seapora Mini Desktop Aquarium Heater, 30-watt

Rated 2 out of 5 stars
1
$13.99 Chewy Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

OASE Indoor Aquatics HeatUp 100 Adjustable Fish Heater

Rated 4 out of 5 stars
4
$41.12 Chewy Price
$42.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

OASE Indoor Aquatics HeatUp 300 Adjustable Fish Heater

Rated 5 out of 5 stars
4
$40.16 Chewy Price
$56.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

OASE Indoor Aquatics Bioplus Thermo 200 Internal Fish Heater

Rated 5 out of 5 stars
2
$84.99 Chewy Price
$109.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

OASE Indoor Aquatics Biomaster Thermo 600 External Fish Heater

Rated 5 out of 5 stars
3
$400.99 Chewy Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

OASE Indoor Aquatics Filtosmart Thermo 100 External Fish Heater

Rated 3 out of 5 stars
4
$134.99 Chewy Price
$169.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

JBJ Aquarium C-Breeze Aquarium Cooling Fan

Rated 1 out of 5 stars
1
$60.27 Chewy Price
Autoship Price

Free delivery on first-time orders
Free 365-day returns
Arrives between Jun 2 and Jun 6

OASE Indoor Aquatics Biomaster Thermo 350 External Fish Heater

Rated 4.7 out of 5 stars
20
$319.99 Chewy Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

OASE Indoor Aquatics Bioplus Thermo 50 Internal Fish Heater

Rated 3 out of 5 stars
2
$65.59 Chewy Price
$94.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

OASE Indoor Aquatics HeatUp 150 Adjustable Fish Heater

Rated 5 out of 5 stars
1
$44.99 Chewy Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Zoo Med Aqua Cool Aquarium Cooling Fan

Rated 2.3 out of 5 stars
7
$23.59 Chewy Price
$45.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

OASE Indoor Aquatics HeatUp 200 Adjustable Fish Heater

Rated 4.7 out of 5 stars
3
$48.82 Chewy Price
$48.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Category

Thermometers

Tank Heaters

Save 5% on repeat deliveries

Product Type

Aquarium Type

Brand

7 Brands are shown below

Fish Type

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